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27 Jul 2007, 11:31

ywilfred wrote:

St1:X^2/(XY+X) < 1 x^2/x(y+1) < 1x/y+1

We know x < y+1 in order for result to be a positive fraction.If x = 5, y could be 5 and 5/6 < 1 but x = y or x = 5, y = 7 and 5/8 < 1. Insufficient.St2:xy/y(y-1) < 1x/y-1 <1> y for the fraction to be less than 1. Sufficient.,

B for me

Can you explain the bold portion.

For statement 1: we get x/(y+1)<1 = x<(y+1) ..So we get x<y which is true..So shouldn't the answer be D....

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27 Jul 2007, 15:06

smily_buddy wrote:

ywilfred wrote:

St1:X^2/(XY+X) < 1 x^2/x(y+1) < 1x/y+1

We know x < y+1 in order for result to be a positive fraction.If x = 5, y could be 5 and 5/6 < 1 but x = y or x = 5, y = 7 and 5/8 < 1. Insufficient.St2:xy/y(y-1) < 1x/y-1 <1> y for the fraction to be less than 1. Sufficient.,

B for me

Can you explain the bold portion.

For statement 1: we get x/(y+1)<1 = x<(y+1) ..So we get x<y which is true..So shouldn't the answer be D....